GM THM700-R4/4L60/4L60E/4L70E Sonnax 77767K Servo Kit, 4th Gear Super Hold Dual fits Chevy Olds 1988-On

Part No:77767K

This is a brand new never installed item, the photos usually show the actual products to be shipped.

This part may fit other models not listed.

Super Hold Dual Servo 4th Gear Kit, fits GM THM 700-R4 / 4L60 / 4L60E / 4L70E transmissions.

4th Gear Servo Kit Includes:

Super Hold Servo
Assembly Steel Washer

Cause: Vehicles with GM THM700-R4 / 4L60 / 4L60E / 4L70E transmissions often exhibit poor 3-4 shift quality and experience band failure in performance applications. The Sonnax 4th gear super hold dual servo assembly 77767K features 40% more apply surface area for greater holding power.

40% More surface area for greater holding power

This Sonnax servo kit can be used with OE, Corvette or Sonnax performance 2nd gear servo assemblies.